Furnace wall



' July 24, w23.

M. LIPTAK FURNAQE WALL Filed Dec. l0. 19.21

4 Sheets-Sheet 1 i Mw/@2% 7%@ July 24, 15%23.

M. LIPTAK FURNACE WALL Filed Deo. lO 1921 4 Sheets-Sheet 2 July 24, 1923. L M. LIPTAK FURNACE WALL Filed De. lO. 1921 4 Sheets-Sheet 5 July 24, w23.' www@ M. LIPTAK v FURNACE WALL Filed Dec. 1o. 1921 4 sheets-sheet 4 Patented July 2d, 1923.

UNF STATES s rasata narrar carica.

MICHAEL LIPTAK, or s'r. PAUL, MINNESOTA, AssIGNOn 'ro A. r. GREEN FIRE BRICK COMPANY, or MEXICO, MISSOURI, A CORPORATION or MISSOURI.

FURNACE WALL.

Application filed December 10, 1921. Serial No. 521,377.

To all whom t may concern:

Be it known that I, MICHAEL LIr'rAK, a citizen of the United States, residing at St. Paul, in the county of Ramsey and State of Minnesota, have invented certain new and useful Improvements in Furnace Walls; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My present invention relates t the con- A struction of furnace walls and isin the nature of an improvement on or addition to the construction disclosed and more broadly claimed in my companion application Serial No. 521,376 filed of even date herewith, whereby the wall is adapted tobe used in connection with buckstays and, hence, especially adapted for use in boiler installations. -In my said, earlier application, the complete wall structure is made up of a permanent Outer masonry wall and a replaceable inner masonry wall and, as a distinctive feature, the inner wall includes horizontally aligned shelf-formin tiles, certain of which are partly imb ded in and anchored to the permanentouter wall.

The present invention, among other things, provides, as an important feature, metallic anchoring rods detachably interlocked to the partly imbedded shelf-forming tiles and certain of which rods extend out ward through and are anchored to the buck stays while other 0f such rods detachably but positively anchor such tiles to other tiles or bricks of the outer wall structure.

In the accompanying drawings, which illustrate the present invention, like char-` acters indicate like parts throughout 'the several views.

Referring to the drawings:

Fig. 1 is a fragmentary perspective, with some parts removed, showing a furnace wall designed in accordance with my present invention;

Fig. 2 is a fragmentary plan view of the wall shown in Fig. 1, some of the tiles of the outer wall and shelf-forming tiles of the inner wall being removed;

Fig. 3 is a fragmentary elevation looking at the inner face of the complete wall str ture;

Fig. 4 is a vertical section 0n the line of Fig. 2 5' J Fig. 5 is a fragmentary elevation looking at the outer face of the wall;

Fig. 6 ig a fragmentary enlarged section on the line 6 6 0f Fig. 2;

Fig. 7 is a fragmentary enlarged section on the same line as Fig. 4;

Fig. 8 is a fragmentary section on the line 8 8 of Fig. 7;

Fig. 9 is a fragmentary plan view illustrating the manner in which certain of the anchoring rods may bev applied in working position;

Fig. 10 is a perspective of one of the anchoring rods;

Fig. 11 is a perspective of one of the main shelf-forming tiles;

Fig. 12 is a perspective of one of the supplemental shelf-forming tiles;

Fig. 13 is a perspective showing one ofthe permanent tiles Of the outer wall structure;

Fig. 14 is a view corresponding to Fig. 7 b ut illustrating a slightly modified construction;

Fig. 15 is-a view corresponding to Fig. 4, but illustratinga different kind of anchoring rod applied in working position; and

Figs. 16, 17 and 18 are views corresponding, respectively, to Figs. 11, 12 and 13, but illustrate a slightly modified construction.

The outer or permanent masonry wall is :made up chieiiy of ordinary bricks 10 laid in mortar in the customary way, but to provide for the shelves to support the horizontal sections of the replaceable inner 0r re wall proper, said outer masonry wall is provided, on certain horizontal lines, with tile courses made up preferably of fire tiles 11, 12 and 13. rIhe tiles 12 are the full width of the masonry wall 10.l The tiles 11 are the main shelf-forming and supporting tiles of the replaceable inner wall and they are partly imbedded in the outer masonry wall 10 but project so that they will be iiush with the inner surface of the replaceable inner Wall. The tiles 13 are locatedbetween the tiles 12, aligned with the imbedded ends of the tiles 11 so that the said tiles 11, 12 and 13, when assembled, form a complete layer in the outer wall, with the tiles 11, as indicated, projectingfor the purpose stated.

To adapt the anchored shelf tiles 11 to support thezsupplemental shelf tiles 14, said tiles 11, at their parallel edges, are rabbeted ner fire wall, may be made up entirely of masonry work.

When any portion of the inner ire wall has been4 burned away' to a point where it requires replacement, the defective fire bricks or tiles may be removed and replaced without disturbing or taking down the permanent outer wall. If only a few of the bricks 16 have been burned away, they may be removed and replaced without disturbing the shelf tiles. However, usually also some of the shelf tiles will be burned and require replacement and lthis may be done as follows: Qbviously, the replacement of one of the supplemental shelf tiles 14 is a very simple matter since it does not extend into the outer wall. lf one of the partly imbedded main shelf tiles 11 requires replacement, it may be easily pulled -or knocked out of position, thereby making possible the replacement thereof by a new tile of the same character.

The buckstays illustrated in the drawings are of common construction, being each made up of a pair of vertical channel beams 17 spaced by washers 18 and rigidly connected by rivets 19. For positively anchoring the main shelf-forming tiles 11 in the permanent outer wall, I provide anchoring ods 20, which, as shown in the construction illustrated in Figs. 1 to 14, inclusive, are alike except that the rods 20 are longer than the rods 21. Both classes of rods are threaded at their outer ends and at their other ends are bent to form lock lugs or shoulders 22.

The tiles 13, which are permanentl built into the masonry outer wall, and t e imbedded inner end portions of the main shelfforming tiles 11 are provided, respectively, with coincident grooves 23 and 24 that are wide enough to pass the lugs 22 when turned horizontally, as shown in Fig. 9, for example. rlhe grooves 23, at their inner extremities, are provided with lock depressions or pockets 25 with which the lugs 22 may be engaged when the anchor rods 20 and 21 are-properly turned to accomplish that result; and obviously, when these lugs are thus engaged with said lock depressions, the `lock rods will be positively locked to the co-operating main shelf-forming tiles 11.

The projecting ends of the long anchor nenas when tightened against washers 27, forcel the latter against the adjacent tiles 13 and positively lock the co-oper'ating shelf-forming tiles 11 to the outer wall structure.

With the arrangement described, it is evident that the main shelf-forming tiles will normally be securely anchored or held in the masonry of the main or permanent outer wall. However, when replacements of said -tiles 11 are to be made, the nuts of the anchor rods being first loosened, said anchor rods may be rotated ninety degrees, thereby moving the lock lugs 22 thereof into horizontal positions out of the lock depressions 25 and into alignment with the grooves 23 and 24, as shownin Fig. 9.

This will release the tiles 11 so that they may be readily displaced or removedv from the masonry of the outer or permanent wall and replaced by new tile of the same character.

Then, as is evident, the new or substituted tiles may be locked by replacing the anchor rods. The described arrangement also makes it an easy matter to uickly anchor the wall structure lto the buc stays.

In the somewhat modified arrangement illustrated in Figs. 14: to 18, inclusive, the main shelf-forming tiles 11 are formed in their upper faces with grooves 28,' which, at their intermediate portions, have lock depressions or pockets 29. Also, in this arrangement, the permanent wall tiles 13 are 7 formed with grooves 30 that do not extend to the outer ends thereof but terminate in lock depressions or pockets l31. For use in connection with these grooves and pockets` just described, at places where the tiles 11 are not to be anchored to buckstays, l provide anchor rods 32, which, at opposite ends, have downturned ends or lock lugs 32a that are so spaced that the will drop into the lock depressions 29 an 30 under the action of gravity when said anchor rods are positioned for such engagement.

Here it should be noted that the ooves 28 extend toward the interior of the rnace beyond the lock depressions 29 far enough to permit the anchor rods 32 to be positioned therein inward of said depressions z,29. ln making a replacement of the shelitile ,11, While qthe fire bricks are removed from above the same, the newtiles are placed in working position, as shown in Fig. 15, the anchor rods 32 are placed in the, inner extremities of the grooves 2,8 with their lugs 32B honi-l "away until the inner lock lug 32 can be reached by a sharp instrument and turned upward into a horizontal position, thereby permitting said rod to be withdrawn toward the interior of the furnace and out of p working position. This will release the remaining portion of the defaced tile 11 so that the same may be easily withdrawn from the permanent wall structure.

Fig. 14 shows the manner in which the nut-equipped anchor rods 2O can be used in connection with the tile 11 and 13 when provided with the grooves and lock depressions shown in Figs. 14 to 18, inclusive, to

' anchor 'the Wall to the buckstays.

masonry inner wall, said inner wall having shelf-forming tiles extended from said inner wall into said outer wall and detachably anchored therein, buckstays at the exterior of said wall structure, andmetallic anchors interlocked to said shelf-forming tiles and extended therefrom through said outer wall and anchored to said buckstays.

2. A wall structure comprising a permanent masonry outer wall and a replaceable masonry inner wall, said inner Wall comprising replaceable shelf-forming tiles independently supporting different belts of the masonry of said inner wall and extended therefrom into said outer wall and detachably anchored therein, said shelf-forming tiles having lock depressions and entrance grooves leading thereto, buckstays at the 

